diff --git a/autologin.php b/autologin.php
index a70ea4467..f6599948d 100644
--- a/autologin.php
+++ b/autologin.php
@@ -31,4 +31,4 @@
 \auth_saml2\auto_login::finish((bool)$success, new moodle_url($url));
 
 // Something strange went wrong, or somebody tried to directly link here.
-print_error('errorinvalidautologin', 'auth_saml2');
+throw new \moodle_exception('errorinvalidautologin', 'auth_saml2');